package com.nj.liandi.gulimall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.nj.liandi.common.constant.ProductConstant;
import com.nj.liandi.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.nj.liandi.gulimall.product.dao.AttrGroupDao;
import com.nj.liandi.gulimall.product.dao.CategoryDao;
import com.nj.liandi.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.nj.liandi.gulimall.product.entity.AttrGroupEntity;
import com.nj.liandi.gulimall.product.entity.CategoryEntity;
import com.nj.liandi.gulimall.product.service.CategoryService;
import com.nj.liandi.gulimall.product.vo.AttrGroupRelationVo;
import com.nj.liandi.gulimall.product.vo.AttrRespVo;
import com.nj.liandi.gulimall.product.vo.AttrVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.nj.liandi.common.utils.PageUtils;
import com.nj.liandi.common.utils.Query;

import com.nj.liandi.gulimall.product.dao.AttrDao;
import com.nj.liandi.gulimall.product.entity.AttrEntity;
import com.nj.liandi.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        //保存基本数据
        this.save(attrEntity);
        //保存关联的关系的数据
        if (attr.getAttrType()== ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()&& attr.getAttrId()!=null) {
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrAttrgroupRelationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(attrAttrgroupRelationEntity);
        }
    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("attr_type", "base".equalsIgnoreCase(type) ? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode(): ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if (catelogId != 0) {
            wrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");

        if (StringUtils.isNotEmpty(key)) {
            wrapper.and(obj -> obj.eq("attr_id", key).or().like("attr_name", key));
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map(attrEntity -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            //设置分组名字
            if ("base".equalsIgnoreCase(type)) {
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId()!=null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
            //设置分类的名字
            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }
            return attrRespVo;
        }).collect(Collectors.toList());
        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Cacheable(value = "attr",key = "'attrinfo:'+#root.args[0]")
    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo attrRespVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity, attrRespVo);
        if (attrEntity.getAttrType()== ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //设置分组信息
            AttrAttrgroupRelationEntity relationEntity = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
            if (relationEntity != null) {
                attrRespVo.setAttrGroupId(relationEntity.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                if (attrGroupEntity != null) {
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }
        //设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        attrRespVo.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null) {
            attrRespVo.setCatelogName(categoryEntity.getName());
        }
        return attrRespVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        //修改基本信息
        this.updateById(attrEntity);

        if (attrEntity.getAttrType()== ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //修改分组关联的信息
            AttrAttrgroupRelationEntity attrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            attrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrgroupRelationEntity.setAttrId(attr.getAttrId());
            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if (count > 0) {
                relationDao.update(attrgroupRelationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            } else {
                relationDao.insert(attrgroupRelationEntity);
            }
        }
    }

//    根据分组id查找相关联的基本属性
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> relationEntities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        if (relationEntities.size()>0) {
            List<Long> attrIds = relationEntities.stream().map(attr -> {
                return attr.getAttrId();
            }).collect(Collectors.toList());
            List<AttrEntity> attrEntities = this.listByIds(attrIds);
            return attrEntities;
        }
        return null;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map(item -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);
    }

    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1.当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2.当前分组只能关联别的分组没有引用的属性
        //2.1当前分类的其他分组
        List<AttrGroupEntity> attrGroupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().in("catelog_id", catelogId));//
        List<Long> collect = attrGroupEntities.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());
        //2.2这些分组关联的属性
        List<AttrAttrgroupRelationEntity> relationEntities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = relationEntities.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());
        //2.3从当前分类的所有属性中排除这些属性,就剩下没有引用的属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (attrIds!=null&&attrIds.size()>0) {
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if (StringUtils.isNotEmpty(key)) {
            wrapper.and(obj->{
                obj.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);
        return new PageUtils(page);
    }

    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        return baseMapper.selectSearchAttrIds(attrIds);
    }
}